Payoff Reel Machine Category Overview
The Payoff Reel Machine is an indispensable upstream unit in metal coil processing lines, designed to unwind heavy steel, aluminum, or specialty alloy coils and feed strip material into downstream operations—whether that be cold rolling mills, slitting lines, coating stations, or profiling equipment. Haijie Machinery’s Payoff Reel series combines rugged mechanical construction, precise tension control, and intelligent automation to deliver smooth, reliable coil pay‑off with minimal strip defects.
A typical Haijie Payoff Reel Machine consists of a coil-loading cradle, a hydraulic or motor‐driven mandrel that expands to grip the inner diameter of the coil, a driven reel assembly for strip feed‐out, and an unwind dancer or tension arm for real‐time loop control. Machines are available in single‐arm, dual‐arm, and swing‐arm configurations, supporting coil weights from 5 t up to 30 t and strip widths from 300 mm to 2,000 mm. Robust frames, low‐friction bearings, and centralized lubrication ensure long life and minimal maintenance.
Expandable Mandrel System
Stepped or segmented hydraulic mandrels adjust to inner diameters ranging from 450 mm to 610 mm.
Tapered segments ensure uniform coil gripping force and prevent slippage or strip damage.
Precise Tension Control
Closed‐loop load cell or dancer‐arm feedback maintains strip tension within ±1 % of setpoint.
Servo‐driven or hydraulic braking options adapt to production speed changes up to 300 m/min.
Dancer Loop Management
Single or multiple roller dancers with pneumatic or hydraulic cylinders manage strip loop height, providing buffer capacity to isolate downstream speed fluctuations.
Optical loop sensors offer non‐contact monitoring and automated tension compensation.
Quick‐Change Coil Carriage
Self‐propelled coil carts enable fast coil exchanges in under 10 minutes, reducing downtime and labor requirements.
Safety interlocks lock carriage in place during pay‐off and retract automatically upon unloading.
Integrated Automation
PLC and HMI interface with recipe management for coil ID, strip gauge, and tension settings.
Optional RFID coil tracking ensures proper setup and data logging for traceability.
Reduced Strip Defects
Uniform tension and smooth unwind actions minimize edge waviness, stretch marks, and coil memories.
High Throughput
Rapid coil changeover and steady‐state pay‐off support continuous operation at up to 300 m/min.
Enhanced Safety
Light‐curtain guards, emergency‐stop bars, and two‐hand interlock controls protect operators during coil loading.
Low Total Cost of Ownership
Heavy‐duty bearings and centralized lubrication extend maintenance intervals to over 10,000 hours.
Scalable Configurations
Single‐width, dual‐width, or multi‐coil pay‐off configurations accommodate complex production schedules.
Cold Rolling Mills
Prepares strips for reduction of gauge in tandem or reversing mills, ensuring consistent entry tension.
Coating Lines
Feeds substrate into hot‐dip galvanizing, paint, or polymer coating processes with precise speed matching.
Slitting and Cut‐to‐Length
Supplies parent coils to slitting lines, optimizing loop control for accurate cut lengths.
Tube & Pipe Mills
Provides continuous feedstock for seam welding and forming operations in tube mills.
Dual‐Arm Payoff
Automatically switches between two coils to support high‑volume, non‑stop production.
Swing‑Arm Unwind
Pneumatic or hydraulic swing‑arm design offers compact footprint for tight factory layouts.
Coil Pre‑Heating Module
Optional induction coil‐preheater raises strip temperature for improved formability in bend‐sensitive alloys.
Remote Diagnostics & IIoT
Embedded sensors stream real‑time tension, load, and speed data to cloud analytics platforms for predictive maintenance and process optimization.
What coil weights and widths are supported?
Standard models handle 5 t to 30 t coils and strip widths from 300 mm to 2,000 mm; custom sizes are available upon request.
How long does a typical coil changeover take?
With automated coil carts and quick‐release mandrels, coil exchange can be completed in under 10 minutes.
Can the Payoff Reel integrate with upstream coil cars or coil handling systems?
Yes. We offer turnkey integration with coil cars, coil upenders, and storage pads, ensuring seamless material flow.
How is strip tension monitored and controlled?
Choice of closed‐loop load cells, dancer arms with position feedback, or a combination, all controlled via PLC logic for ±1 % tension accuracy.
Do you provide commissioning and training services?
Haijie offers full turnkey services including Factory Acceptance Testing (FAT), Site Acceptance Testing (SAT), on‑site mechanical/electrical commissioning, and operator & maintenance training.
